<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 引入vue.js库 -->
    <script src="./../js/vue.js"></script>
</head>
<style>
    * {
        padding: 0;
        margin: 0;
    }
    
    #root {
        padding: 10px;
    }
    
    .left {
        border: 1px solid #ccc;
        float: left;
        padding: 10px;
        margin-right: 20px;
        background-color: rgb(182, 225, 231);
    }
    
    .right {
        border: 1px solid #ccc;
        padding: 10px;
        float: left;
        background-color: rgb(182, 225, 231);
    }
    
    p {
        margin-bottom: 10px;
    }
    
    span,
    input {
        display: inline-block;
        padding: 5px;
    }
    
    .left button {
        float: right;
        padding: 8px 10px;
        background-color: rgb(59, 145, 250);
        color: white;
        border: rgb(59, 145, 250);
        margin-top: 20px;
    }
    
    center {
        font-size: 20px;
        margin-bottom: 10px;
        border-bottom: 1px solid #ccc;
    }
    
    tr {
        border-bottom: 1px solid white;
        padding-bottom: 5px;
    }
    
    thead,
    tbody {
        display: block;
        margin-bottom: 10px;
    }
    
    tr {
        display: block;
        margin-bottom: 5px;
        width: 600px;
        display: flex;
        text-align: center
    }
    
    td {
        width: 100px;
    }
    
    .right button {
        background-color: red;
        padding: 5px;
        color: white;
        border: red;
    }
</style>

<body>
    <!-- 声明一个容器 -->
    <div id="root">
        <div class="left">
            <p><span>账号：</span><input type="text" @blur='isName(uname)' v-model="uname" placeholder="输入账户，2~5长度"></p>
            <p><span>密码：</span><input type="text" @blur='isPwd(pwd)' v-model="pwd" placeholder="密码是字母和数字组合"></p>
            <p><span>性别：</span>
                <input type="radio" name='sex' value='男' v-model='gender'>男
                <input type="radio" name='sex' value='女' v-model='gender'>女
            </p>
            <p><span>年龄：</span><input type="text" @blur='isAge(age)' v-model='age'></p>
            <button @click='addInfo'>添加用户</button>
        </div>
        <div class="right">
            <table>
                <thead>
                    <tr>
                        <center>用户信息列表</center>
                        <td><input type="checkbox" v-model='all' @change='checkAll(all)'>全选</td>
                        <td>账号</td>
                        <td>密码</td>
                        <td>性别</td>
                        <td>年龄</td>
                        <td>操作</td>
                    </tr>
                </thead>
                <tbody>
                    <tr v-for='(item,index) in info' :key='index' v-if='info.length!=0'>
                        <td><input type="checkbox" v-model='item.done' @change='checkOne(item.done)'></td>
                        <td>{{item.uname}}</td>
                        <td>{{item.pwd}}</td>
                        <td>{{item.gender}}</td>
                        <td>{{item.age}}</td>
                        <td><button @click='del(index)'>删除</button></td>
                    </tr>
                    <tr v-if='info.length==0'>
                        <td colspan="6" style="width: 600px;">还没有用户信息哟，快去添加吧</td>
                    </tr>
                </tbody>
            </table>
            <button v-if='show' @click='delDone'>删除已勾选</button>
        </div>
    </div>
</body>
<script>
    // 创建vue实例
    const vm = new Vue({
        // 指定容器
        el: '#root',
        data: {
            info: JSON.parse(localStorage.getItem('info')) || [],
            all: false,
            uname: '',
            pwd: '',
            gender: '男',
            age: '',
            done: false,
            show: false,
        },
        methods: {
            // 验证账号
            isName(uname) {
                if (!/^[0-9A-Za-z]{2,5}$/.test(uname) || uname === 'admin') {
                    alert('账户长度应在2-5之间，且不能取名为admin')
                    this.uname = ''
                    return
                }
            },
            // 验证密码
            isPwd(pwd) {
                const reg = /^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{2,}$/
                if (!reg.test(pwd)) {
                    alert('密码必须是字母和数字的组合')
                    this.pwd = ''
                    return
                }
            },
            // 验证年龄
            isAge(age) {
                if (!/^\d+$/.test(age)) {
                    alert('年龄必须是数字')
                    this.age = ''
                    return
                } else if (+age <= 0 || +age > 200) {
                    alert('年龄必须在1~200之间')
                    this.age = ''
                    return
                }
            },
            // 添加用户
            addInfo() {
                if (!this.uname || !this.pwd || !this.gender || !this.age) {
                    console.log(!this.uname);
                    alert('所有信息都不能为空')
                    this.uname = this.pwd = this.checked = this.age = ''
                    return
                } else {
                    // 放到info数组，存本地
                    this.info.unshift({
                        uname: this.uname,
                        pwd: this.pwd,
                        gender: this.gender,
                        age: this.age,
                        done: this.done,
                    })
                    console.log(this.info)
                    localStorage.setItem('info', JSON.stringify(this.info))
                    this.uname = this.pwd = this.checked = this.age = ''
                }
            },
            //  删除用户
            del(i) {
                if (confirm('确定要删除嘛？')) {
                    this.info.splice(i, 1)
                    localStorage.setItem('info', JSON.stringify(this.info))
                }
            },
            // 全选
            checkAll(all) {
                this.info.forEach(item => item.done = all)
                this.show = all
            },
            // 勾选 取消勾选
            checkOne(done) {
                // 循环数组判断选中了几个
                let i = 0
                this.info.forEach(item => {
                    if (item.done === true) i++
                })
                if (i >= 2) {
                    this.show = true
                } else {
                    this.show = false
                }
            },
            // 删除已勾选
            delDone() {
                if (confirm('确定要删除所有已勾选的嘛？')) {
                    this.info.forEach(item => {
                        if (item.done == true) this.info = this.info.filter(item => item.done == false)
                    })
                    this.show = false
                }
            }
        },
    })
</script>

</html>